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地球学报  2002 

划分华南不同块体的地球物理根据及与地球化学分区特征的对比研究

Keywords: 华南大陆,地块划分,地球物理,花岗岩同位素地球化学

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Abstract:

根据华南的航磁、地震和大地电磁等地球物理方法的探测结果,将华南大陆划分为3个不同块体:扬子地块、华夏地块和东南沿海地块;并计算了华南视磁化强度的分布。根据视磁化强度的分布研究华南磁性分区特征,并利用深地震测深剖面资料和大地电磁资料对磁性分区的边界加以控制和印证,最后以多种地球物理方法确定的边界作为块体的边界。因此,这样对地块的划分比较客观。依据地球物理划分的结果与花岗岩同位素地球化学的研究结果进行了简单的比较,以说明这样的划分是受到地球物理和地球化学共同约束的。

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